package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrGroupRelationVo;
import com.atguigu.gulimall.product.vo.AttrRespVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao relationDao;

    @Autowired
    AttrGroupDao attrGroupDao;

    @Autowired
    CategoryDao categoryDao;

    @Autowired
    CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttr(AttrVo attr) {

        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        // 1、保存基本数据
        this.save(attrEntity);

        // 2、存储关联关系
        if(attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null){
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();

            attrAttrgroupRelationEntity.setAttrId(attrEntity.getAttrId());
            attrAttrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationDao.insert(attrAttrgroupRelationEntity);
        }

    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().
                eq("attr_type", "base".equalsIgnoreCase(type)?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        if (catelogId != 0){
            queryWrapper.eq("catelog_id", catelogId);
        }

        // 模糊查询
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            queryWrapper.and((wrapper)->{
                wrapper.like("attr_id", key).or().like("attr_name", key);
            });
        }

        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );

        PageUtils pageUtils = new PageUtils(page);
        // 向pageUtils中添加"catelogName" "groupName"这两个属性

        List<AttrEntity> records = page.getRecords();
        // 从records流中获取每一个对象
        List<AttrRespVo> list = records.stream().map((attrEntity) -> {
            // 先将attrVo含有的注入到attrRespVo中
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);

            // 1、设置分类和分组的名字
            if("base".equalsIgnoreCase(type)){
                AttrAttrgroupRelationEntity entity = relationDao.selectOne(
                        new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));

                if (entity != null && entity.getAttrGroupId() != null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(entity.getAttrGroupId());
                    if(attrGroupEntity != null){
                        String attrGroupName = attrGroupEntity.getAttrGroupName();

                        attrRespVo.setGroupName(attrGroupName);
                    }
                }
            }

            // 添加"catelogName"
            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());

            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }

            return attrRespVo;
        }).collect(Collectors.toList());

        pageUtils.setList(list);

        return pageUtils;

    }

    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        // 将原有的数据添加入
        AttrEntity attrEntity = this.getById(attrId);
        AttrRespVo attrRespVo = new AttrRespVo();
        BeanUtils.copyProperties(attrEntity, attrRespVo);

        if(attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            // 1、设置分组信息
            AttrAttrgroupRelationEntity relationEntity = relationDao.selectOne(
                    new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
            if(relationEntity != null){
                attrRespVo.setAttrGroupId(relationEntity.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(relationEntity.getAttrGroupId());
                if (attrGroupEntity!= null){
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }


        // 2、设置分类信息
        Long[] catelogPath = categoryService.findCatelogPath(attrEntity.getCatelogId());
        attrRespVo.setCatelogPath(catelogPath);
        CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
        if(categoryEntity != null){
            attrRespVo.setCatelogName(categoryEntity.getName());
        }

        return attrRespVo;
    }

    @Transactional
    @Override
    public void updateAttr(AttrRespVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        this.updateById(attrEntity);

        if(attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            // 1、修改分组关联

            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();

            relationEntity.setAttrId(attr.getAttrId());
            relationEntity.setAttrGroupId(attr.getAttrGroupId());

            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            if(count != 0){
                relationDao.update(relationEntity, new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            }else {
                relationDao.insert(relationEntity);
            }
        }
    }

    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {

        // 获取为该groupId的类型的关系对象
        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList(
                new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));

        // 获取属性的id
        List<Long> attrIds = entities.stream().map((attr) -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        if(attrIds == null || attrIds.size() == 0){
            return null;
        }

        // 通过类型的id获取属性的对象集合
        List<AttrEntity> attrEntityList = this.listByIds(attrIds);
        return attrEntityList;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vo) {

        // 封装成属性对象集合
        List<AttrAttrgroupRelationEntity> relationEntities =
                Arrays.stream(vo).map((attrGroupRelationVo)->{
                    AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
                    BeanUtils.copyProperties(attrGroupRelationVo, relationEntity);
                    return relationEntity;
                }).collect(Collectors.toList());

        relationDao.deleteBatchRalation(relationEntities);
    }

    /**
     * 获取当前分组没有关联的所有属性
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        // 1、当前只能关联自己所属的分类里所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        // 2、当前分组只能关联别的分组没有引用的属性
        // 2.1)当前分类下的其他分组
        List<AttrGroupEntity> groupEntities = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> groupIds = groupEntities.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());
        // 2.2)这些分组关联的属性
        List<AttrAttrgroupRelationEntity> relationEntities =
                relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", groupIds));
        List<Long> attrIds = relationEntities.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        // 2.3) 从当前分类的所有属性中移除这些属性
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if(attrIds!= null && attrIds.size() != 0){
            wrapper.notIn("attr_id", attrIds);
        }
        // 模糊查询
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and(w->{
                w.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);
        PageUtils pageUtils = new PageUtils(page);
        return pageUtils;
    }

    /**
     * 获取可以被检索的属性id
     * @param collect
     * @return
     */
    @Override
    public List<Long> getIdINAttrIds(List<Long> collect) {
        List<AttrEntity> entities = this.listByIds(collect);

        List<Long> collect1 = entities.stream().filter(item -> {
            return item.getSearchType() == 1 ? true : false;
        }).map(i -> {
            return i.getAttrId();
        }).collect(Collectors.toList());

        return collect1;
    }

}